V4L/DVB (9110): cx18: Add default behavior of checking and retrying PCI MMIO accesses

cx18: Add default behavior of checking and retrying PCI MMIO accesses.
The concept of checking and retrying PCI MMIO accesses for better reliability
in older motherboards was suggested by Steve Toth <stoth@linuxtv.org>.  This
change implements MMIO retries and the retry_mmio module parameter that is
enabled by default.  Limited experiments have shown this is more reliable than
the mmio_ndelay parameter.  mmio_ndelay has insignificant effect with retries
enabled.

Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/media/video/cx18/cx18-ioctl.c b/drivers/media/video/cx18/cx18-ioctl.c
index 4a47f61d9486..83aa9cb02e00 100644
--- a/drivers/media/video/cx18/cx18-ioctl.c
+++ b/drivers/media/video/cx18/cx18-ioctl.c
@@ -752,6 +752,7 @@ static int cx18_log_status(struct file *file, void *fh)
         CX18_INFO("Read MPEG/VBI: %lld/%lld bytes\n",
                         (long long)cx->mpg_data_received,
                         (long long)cx->vbi_data_inserted);
+        cx18_log_statistics(cx);
         CX18_INFO("==================  END STATUS CARD #%d  ==================\n", cx->num);
         return 0;
 }